GPT-5.5on Krater.ai
OpenAI's GPT-5.5 is the next-generation flagship model with a 1M-token context window, sharper reasoning, and improved instruction following over GPT-5.3. Available now on Krater alongside 350+ other AI models.
Released April 24, 2026
Specifications
GPT-5.5 at a glance
Context
1.1M tokens
Max output
128K tokens
Input
File, Image, Text
Output
Text
Input price
$5.00 / 1M
Output price
$30.00 / 1M
Knowledge cutoff
2025-12-01
Krater rank
#10
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Live ChatGPT statusCapabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
- Frontier reasoning across math, code, and analysis
- 1M-token context for long documents and codebases
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Coding index score
74.9
Agentic index score
36.4
Intelligence index score
38.4
Design Arena agenticslides rank
#6
Design Arena agenticslides(python-pptx) rank
#6
Compare
Compare GPT-5.5
GPT-5.5 vs GPT-4o Mini
GPT-4o mini is OpenAI's newest model after GPT-4 Omni, supporting both text and image inputs with text outputs.
Open comparisonGPT-5.5 vs GPT-4o
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs.
Open comparisonGPT-5.5 vs GPT-4.1
GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning.
Open comparisonFAQ
Questions about GPT-5.5
Clear answers based on the model catalog and Krater access.